Printability and Mechanical Anisotropy of 3D-Printed Concrete with Manufactured Sand Derived from Basalt
Source abstract
Abstract
3D-printed concrete (3DPC) technology based on layer-by-layer stacking has received increasing attention owing to its ability to produce customized formwork-free products. In this study, basalt-derived manufactured sand (MS) was used as a replacement for natural sand in 3DPC mixtures. Tests on printability, green strength at varying curing times, hardened mechanical properties, and characterization of the microstructure were conducted. The results demonstrate that the incorporation of MS into 3DPC produces an increase in fluidity and a reduction in unconfined compressive strength. Incorporation of MS enhanced the flexural strength of 3DPC along the printing direction, that is, the interlayer bonding strength, while decreasing its compressive anisotropy from 0.81 to 0.29. This partially compensates for interlayer defects in 3DPC, thereby benefiting for overall performance improvement of structures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Innovations in Concrete and Construction Materials · Additive Manufacturing and 3D Printing Technologies · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil Engineering, Tongji University, Shanghai, China.
College of Civil Engineering and Architecture, Guangxi University, Nanning, China.
Shanghai Pudong Environmental Protection Development Co., Ltd., Shanghai, China.
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